Prosecutors arrested Livedoor Co. President Takafumi Horie and three company executives Monday night on suspicion of securities law violations, investigative sources said.
Taken into custody along with the 33-year-old Internet tycoon were Livedoor Chief Financial Officer Ryoji Miyauchi, 38, Livedoor Director Fumito Okamoto, 38, and Livedoor Finance Co. President Osanari Nakamura, 38, the sources said.
Before he was taken to Tokyo Detention House, Horie was questioned by prosecutors for the first time earlier in the day. After the Tokyo stock market closed the day's session, prosecutors called on Horie to turn himself in at their office.